Finally, some science we can use: researchers have found that your middle finger has slower reaction time than your other fingers, because of the way your nerves are wired. But never fear! The nervous system is a wonderful thing, and you can train your middle finger to respond more quickly — "if, for example, you stimulate one finger electrically or by means of vibration for two to three hours." Be careful, though — having your middle finger on hair-trigger may not be the best idea. It could cost you a lot of money.